Fig. 3

Distribution of immune populations according to histopathological features. a Immune cell density (IRA%) in DA (Duodenal Adenocarcinoma; n = 12); DA on Ad (Duodenal Adenocarcinoma progressed from Adenoma; n = 3) and Ad (Adenoma; n = 3). b Density of immune cells in duodenal cancer specimens according to histotype: NOS (Not Otherwise Specified; n = 7); MUC (Mucinous histotype; n = 5); INT (Intestinal histotype; n = 1); AD SQ (Adenosquamous histotype; n = 1). * p = 0.01 by Mann–Whitney